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PLUS E Endstufen

PLUS E is the name of a series of ministep bipolar chopper drives intended for driving R.T.A. EM series stepping motors with encoder.

PLUS E series drives can control EM stepping motors in a standard way but also give an alarm in case of loss of synchronism.

The drives are housed in a metallic box, 152 x 129 x 46 mm format, suitable for wall mounting. They do not need external fans: accordingly, they are ideal for mounting inside a metallic electrical cabinet as well as for stand-alone applications.

R.T.A. experience, together with a thorough design of both hardware and software, has led to a product offering high reliability, premium performances and great ease of use at competitive costs.

  • Operation at 400, 800, 1600, 3200 and 500, 1000, 2000, 4000 steps/revolution.
  • Electronic resonance damping circuit to ensure acoustic noise and mechanical vibrations reduction at low and medium speed.
  • Wide range of operating voltages and motor phase currents setting. Up to 8 possible equidistant values between INF min. and INF max. can be set by means of DIP-SWITCH.
  • Automatic current reduction at motor standstill and possibility to switch off motor current with an external logic signal.
  • Protection against a short circuit at motor outputs and protection against under-voltage and over-voltage.
  • Overheating protection with thermal sensor.
  • High efficiency CHOPPER with MOSFET final stage output.
  • Alarm memory by use of yellow blinking led.
  • AC power supply: internal rectifier.
Vac Inf. min. Inf. max. Dimensions
(VOLT) (AMP) (AMP) (mm.)
PLUS E3 from 28 to 62 2.4 8 152 x 129 x 46
PLUS E4 from 55 to 100 1.9 6 152 x 129 x 46
  • Inputs for the connection of the EM motors encoder.
  • Output for the loss of synchronism alarm.
  • Setting, by means of DIP-SWITCH, of the sensitivity of the loss of synchronism alarm system.